Artifacts appear when baking on HDRP + URP on-demand and using Shadergraph / Standard shaders

1. Open [Internal link]
2. Open SampleScene.unity
3. Notice how the lightmaps have serious artifacts
4. Assign _shader 1 to _TestMaterial
5. Notice how lightmaps look correct
6. Assign _shader2 to _TestMaterial
7. Notice how lightmaps look incorrect again

 

(Do not re-bake as that will destroy the repro)

Reproduced on Windows 10 with GPU and CPULM

Regressed due to LightBaker (no bisection needed)